Paving-block



( pecimens.)

W. B. HAYDEN.

PAVING BLOOK.

No. 306,251. Patented Oct. 7,1884.

1760629202. mammals)! yden UNlTED Sra'rns Parent" lVILLlAlM B. HAYDEN, OF COLUMBUS, OHIO.

PAVING-BLOCK.

.JPISCIPICA'I'ION forming part of Letters Patent No. 306,251, dated October 7, 1884. Application filed July 10,1884. (Specimens) To all whom'ilfi may concern:

Be it known that I, WILLIAM B. HAYDEN, a citizen of the United States, residing at Golumbus, Ohio, have invented new and useful Im 'irovements in Paving-Blocks, of which the following is a specification.

This invention relates to improvements in the construction ofcomposition blocks for paving streets, and has for its object to provide an improved method of paving, whereby each paving-block has an imperforate top wall and an interior filling of sand or equivalent material to impart elasticity to the pavement and afford perfect bearing over the entire bottom of each block.

The invention also has for its object to provide novel construction of paving-block composed of lire-clay or other vitrifiable c0mpound, whereby the block, when baked or burned,will be uniformly vitrified throughout its structure without cracking or overburning any part of the bloek,asisthe case in burning or baking solid blocks of clay or likematerial, for the reason that the heat destroys the outer surface before properly acting on the center thereof.

The invention also has for its object to provide a hollow burned or baked paving-block which is imperforate and will prevent animals from slipping, while preventing rain or other water or frost from passing through the block to the foundation or ground.

The invention also has for its object to provide a hollow burned or baked paving-block with imperforate walls, which can be filled to form a cushion and render the block elastic when laid on its foundation. I

The invention also has for its obj ect to provide burned or baked paving-blocks for producing a more uniform and smooth pavement than ordinary stone,at a much less expense than the latter; to provide a composition paving-block in which the amount of material is lessened to construct the sam e, and the weight and expense of transportation are reduced to a minimum, and to provide a hollow burned or baked paving-block which will avoid the danger of animals slipping.

These objects I accomplish in the manner and by themeanshereinafter described and claimed, reference being had to the accompanying drawings illustrating my invention, in which- Figure l is a perspective view of a portion of astreet-pavement embodying my invention; Fig. 2, a perspective view of one of the paving-blocks, and Fig. 3 a vertical central sectional View of the same.

In order to enable others skilled in the art to make and use my invention, I will now proeeed to describe the same, referring to the drawings, where the numbers 1 indicate the paving-blocks, shown in Fig. 1 as constituting a street-pavement between the usual sidewalks.

The paving-blocks are composed of a composition of fire-clay or other refractory or vitriiiable material, such as sand and alkaline salts or flint and alkalies, which are formed by molds in a plastic condition'into a hollow or chambered body having an imperforate top wall, 2, and vertical side walls, 3, the top wall having a series of indentations, depressions, or cavities, 4, after which the structure is burned or baked until vitrified.

To facilitate the withdrawal from the molds, the chamberin the block is made tapering, the widest portion being at the lower edge.

The construction provides a hollow block the walls of which are of uniform thickness,or approximatelyso, in such manner that in burn ing or baking the heat uniformly penetrates and vitrifies the composition to obtain. a perfcct vitrified exterior wearing'surface.

The blocks so constructed are filled with sand or equivalent materiahas at 5, during the process of laying them,whereby each block of the pavement is rendered elastic by the interior cushion of sand, and at the same time perfect bearings over the entire bottoms of the blocks are obtained when they are laid on the founda tion, which latter may be the earth or some specially-prepared foundation. The top wall of the block, having indentations or depressions, provides simple and eiiicient means for preventing animals from slipping, while the top wall being imperforate will prevent rain or other matter or frost from passing therethrongh to the foundation of the pavement.

The surrounding upper edges of the blocks are each beveled, as at 6, so that when a series of the blocks are placed together crevices or spaces are provided to receive a filling of sand or like material.

Having thus described my invention, what I claim is-- ICO 1. A hollow vitrified pavingblock having imperforate side and top walls, and adapted to be filled with sand or equivalent material, to render the block elastic and provide a perfect bearing over its entire bottom portion when laid on the pavement-foundation,substantially as described.

2. A hollow vitrified paviugblock having an imperforate top wall formed with depressions, substantially as described.

3. Apavement consisting of hollow vitrified blocks having impcrforate top and side walls, and each filled with a cushion ofsand or equivalent material, to render the blocks elastic and provide them with perfect bearings over their entire bottom portions substantially as described.

4. A streetpavemcnt consisting of hollow vitrified blocks having side walls and imperforate top walls formed with depressions,eaeh block containing a filling to render the roadway elastic and provide a perfect bearing over the entire bottom portions of the block, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses. v

y XVM. B. HAYDEN. Witnesses:

G. H. HAYDEN, A. O. CORNWALL. 

